Which of the following is the first concrete evidence hazardous materials are present? O Senses
O Markings and color
O Container shape
O Placards and labels

Amutagen is 1: a living thing that has undergone a mutation. 2: an agent that causes a mutation in dna. 3: a mutation that has affected one gene. 4: a chemical that can poison living cells.

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry